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PRACTICE EXAM ANSWERS - UPPER EXTREMITY AND BACK
I. Multiple Choice - Select the One best answer to complete the
statement or answer the question. Fill in the blank space on the
computer answer sheet that corresponds to the letter of your choice.
Only one answer is acceptable.
1. __B__ Loss of flexion of the forearm at the elbow would result
from damage to the _________ nerve.
A. median
B. musculocutaneous
C. radial
D. ulnar
E. none of the above
2. __A__The levator scapulae and the rhomboid muscles are
innervated by branches of the
A. dorsal scapular nerve
B. suprascapular nerve
C. branches of the posterior cord of the brachial plexus
D. accessory nerve
E. none of the above
3. __D__ Adduction of the wrist results from the action of
A. flexor carpi ulnaris
B. flexor carpi radialis
C. extensor carpi ulnaris
D. both A and C
E. all of the above
4. __D__ Which of the following cutaneous nerves is a DIRECT
branch of a cord of the brachial plexus
A. Posterior cutaneous nerve of arm (Posterior brachial cutaneous)
B. Lateral cutaneous nerve of arm (Lateral brachial cutaneous)
C. Lateral cutaneous nerve of forearm (Lateral antebrachial
cutaneous)
D. Medial cutaneous nerve of forearm (Medial antebrachial
cutaneous)
E. Posterior cutaneous nerve of forearm (Posterior antebrachial
cutaneous)
5. __C__ When the arm is raised (abducted) from the side and lifted
above the horizontal plane, the order of muscular contractions is
A. Trapezius then deltoid then serratus anterior
B. Deltoid then deltoid and supraspinatus then serratus anterior
C. Supraspinatus then deltoid and supraspinatus then serratus
anterior
D. Deltoid then trapezius and deltoid then serratus anterior
E. Serratus anterior then deltoid then supraspinatus
6. __E__ The median nerve supplies the following intrinsic hand
muscles
A. palmar interosseus
B. adductor pollicis
C. medial two lumbricals
D. hypothenar muscles
E. none of the above
7. __D__ The axillary artery can be arbitrarily divided into three parts
by its relationship to the
A. Trunks of the brachial plexus
B. Pectoralis major
C. Latissimus dorsi tendon
D. Pectoralis minor
E. Lower border of teres major
8. __D__ In which direction is the humerus most likely to move
initially in a dislocation of the glenohumeral joint?
A. Anterior
B. Superior
C. Posterolateral
D. Inferior
E. Inferolateral
9. __C__ The Superficial palmar arterial arch is derived MAINLY
from the
A. deep branch of the ulnar artery
B. radial artery
C. ulnar artery
D. arteria princeps pollicis
E. median artery
10. __C__ In which area of the vertebral column does a curve
develop in association with walking upright?
A. cervical
B. thoracic
C. lumbar
D. sacral
E. cervical and thoracic
11. __E__ Contents of the carpal tunnel DO NOT include the
A. flexor digitorum superficialis
B. flexor digitorum profundus
C. flexor pollicis longus
D. median nerve
E. ulnar artery
12. __E__ Cords of the brachial plexus are named in relation to the
A. Subclavian artery
B. Pectoralis minor
C. Axillary vein
D. Trunks of the plexus
E. Axillary artery
13. __B__ A "shoulder separation" involves rupture of which
ligament?
A. coracoacromial
B. coracoclavicular
C. glenohumeral
D. coracohumeral
E. transverse humeral
14. __B__ The major and most commonly occurring superficial vein
on the surface of the lateral antebrachium is the
A. Brachial vein
B. Cephalic vein
C. Basilic vein
D. Median cubital vein
E. Medial cubital vein
15. __B__ Which of the following ligaments is ruptured in the
condition known as "pulled" elbow?
A. Radial collateral ligament
B. Annular ligament
C. Ulnar collateral ligament
D. Interosseus membrane
E. Oblique cord
16. __E__ The deep back muscles (erector spinae) are innervated
by
A. ventral rami of spinal nerves
B. the accessory nerve
C. the dorsal scapular nerve
D. intercostal nerves
E. dorsal rami of spinal nerves
17. __B__ The brachioradialis muscles inserts
A. at the base of the second metacarpal
B. at the styloid process of the radius
C. at the styloid process of the ulna
D. at the base of the fifth metacarpal
18. __C__ The posterior longitudinal ligament of the vertebral
column is located
A. posterior to the spinous processes
B. anterior to spinous processes but posterior to the spinal cord
C. anterior to the spinal cord but posterior to the bodies
D. anterior to the bodies
E. between adjacent pedicles
19. __E__ Sampling of cerebrospinal fluid is usually done at
vertebral level
A. T6
B. T10
C. T12
D. L1
E. L4
20. __D__ Which muscle takes origin from the outer surface of the
upper eight ribs and inserts upon the anterior surface of the medial
border of the scapula?
A. Levator scapulae
B. Rhomboideus major
C. Rhomboideus minor
D. Serratus anterior
E. Semispinalis thoracis
21. __C__ Which of the following conditions results when the neural
folds fail to fuse in development and the spinal cord is exposed
dorsally
A. Spina bifida cystica
B. Spina bifida cystica with meningocele
C. Spina bifida cystica with myeloschisis
D. Spina bifida cystica with meningomyelocele
E. Spina bifida occulta
22. __D__ The thoracodorsal nerve (middle subscapular nerve)
arises from which part of the brachial plexus?
A. Roots
B. Upper trunk
C. Lateral cord
D. Posterior cord
E. Medial cord
23. __C__ The inferior angle of the scapula is located at vertebral
level
A. T5
B. T6
C. T7
D. T8
E. T9
24. __E__ Which muscle forms the anterior axillary fold?
A. Latissimus dorsi
B. Teres major
C. Subscapularis
D. Pectoralis minor
E. None of the above
25. __B__ The axillary vein is located ________ to the axillary
artery.
A. lateral
B. medial
C. superior
D. inferior
E. posterior
26. __E__ Which direction does herniation of an intervertebral disc
usually occur?
A. Anterior
B. Anterolateral
C. Posterior
D. Posteromedial
E. Posterolateral
27. __A__ Which group of axillary lymph nodes DIRECTLY drains
lymph from the breast?
A. Pectoral
B. Lateral
C. Infraclavicular (Deltopectoral)
D. Subscapular
E. Apical
28. __C__ What is the arrangements of the Flexor digitorum
superficialis tendons as they pass deep to the flexor retinaculum?
A. 3 and 5 anterior to 2 and 4
B. 2 and 3 anterior to 4 and 5
C. 3 and 4 anterior to 2 and 5
D. 2 and 5 anterior to 3 and 4
E. all tendons in same coronal plane
29. __E__ Damage to which nerve results in a condition known as
'ape' hand?
A. Radial
B. Ulnar
C. Posterior interosseus
D. Anterior interosseus
E. Median
30. __C__ Loss of the ability to abduct and adduct the digits of the
hand would indicate a lesion of the
A. musculocutaneous nerve
B. radial nerve
C. ulnar nerve
D. median nerve
E. posterior cord of brachial plexus
31. __C__ Which of the following conditions can result from the
presence of a hemivertebra?
A. Kyphosis
B. Lordosis
C. Scoliosis
D. Exaggerated primary curvature
E. Exaggerated secondary curvature
32. __B__ Within the brachium, the brachial artery is crossed
superficially by the
A. ulnar nerve
B. median nerve
C. radial nerve
D. musculocutaneous nerve
E. axillary nerve
III. Matching Questions (one point each)
Match the muscle with its insertion
71. __A__ Latissimus dorsi
72. __C__ Infraspinatus (tuberosity) of
humerus
73. __C__ Supraspinatus
74. __C__ Teres minor humerus
75. __B__ Subscapularis
A. Bicipital groove
B. Lesser tubercle
C. Greater tubercle
(tuberosity) of
D. Shaft of humerus
E. Anatomical neck of
humerus
Match the muscle with its origin(s)
76. __C__ Pronator teres (one head)
A. Radius
77. __B__ Pronator teres (other head)
B. Ulna
78. __C__ Flexor carpi ulnaris (one
C. Medial epicondyle of
head)
humerus
79. __B__ Flexor carpi ulnaris (other
head)
D. Lateral epicondyle of
humerus
80. __C__ Flexor digitorum superficialis
(one head)
81. __A__ Flexor digitorum superficialis
(other head)
82. __A__ Flexor pollicis longus
83. __D__ Extensor digiti minimi
Match the muscle with a bone upon which it inserts
84. __C__ Flexor pollicis longus
85. __C__ Extensor pollicis longus of thumb
A. First metacarpal
86. __B__ Extensor pollicis brevis of thumb
B. Proximal
phalanx
87. __B__ Flexor pollicis brevis E. 2nd
metacarpal
C. Distal phalanx
88. __D__ Extensor carpi radialis brevis
D. 3rd metacarpal
89. __C__ Extensor carpi radialis longus
IV. True/False. For each question fill in the blank space on the
computer answer sheet. Fill in the space for an "A" on the answer
sheet for all TRUE statements. Fill in the space for a "B" on the
answer sheet for all false statements.
90. __A__ At the digits, the flexor digitorum superficialis tendons split
and insert onto the middle phalanx of digits 2-5.
91. __B__ The blood supply to the posterior compartment of the
forearm is derived from the posterior interosseus artery which is
typically a branch of the radial artery.
92. __A__ The lateral cutaneous nerve of the forearm (antebrachial
cutaneous nerve) is typically the terminal branch of the
Musculocutaneous nerve.
93. __B__ The interosseus membrane uniting the radius and ulna is
an example of a synchondrosis type of joint.
94. __A__ Ligation of the axillary artery just proximal to the
subscapular artery will not disrupt the blood supply to the upper
extremity.
95. __A__ In the cubital fossa, the brachial artery lies lateral to the
median nerve.
96. __B__ The axillary artery and vein are contained within the
axillary sheath but not the posterior cord of the brachial plexus.
97. __B__ The superficial palmar arterial arch is located superficial
to the palmar aponeurosis.
98. __A__ The superficial branch of the radial nerve courses in the
forearm deep to the brachioradialis muscle.
99. __A__ The brachial plexus is formed of the anterior primary rami
of spinal nerves not the posterior primary rami.
100. __B__ In the distal half of the brachium, the ulnar nerve
courses into the posterior compartment of the arm and then passes
anterior to the medial epicondyle of the humerus to enter the
forearm.